MIT is in Cambridge, Massachusetts, just across the Charles River from Boston, where three people were killed and 180 injured in a double bomb attack on the city's marathon on Monday. Authorities made no immediate link between the two incidents. Here, officers are seen searching a dark area near Massachusetts Institute of Technology following reports of the shooting.

MIT is in Cambridge, Massachusetts, just across the Charles River from Boston, where three people were killed and 180 injured in a double bomb attack on the city's marathon on Monday. Authorities made no immediate link between the two incidents. Here, officers are seen searching a dark area near Massachusetts Institute of Technology following reports of the shooting. (AP)